Pai nu trebuie sa iei tot dintr-un referat, combini mai multe referate. Uite ce am gasit eu:
http://www.referat.ro/referate/Sticla_f6c2a.html
http://www.cuplari.ro/referate/referat_Sticla-1530.html
http://www.referatele.com/......le-com.php
http://www.referatero.com/referate/chimie/CHI5/Sticla.php
http://www.referate-director.com/......clelor.php
Sper ca te-am ajutat :)
Http://www.referat.ro/referate/Sticla_f6c2a.html
http://www.e-referate.ro/referate/Sticla2006-11-20.html
http://www.referat.ro/......7701c.html
http://www.referatele.com/......le-com.php
http://www.ereferat.org/referate/chimie/sticla/826.html
( Funda? >:D